warm  an.]  PRECIOUS PTERIID^E.  637 
Procter  (J.  R.) ,  coal  fields  of  Kentucky MR  1892,  pp  415-417 
list  of  ores,  minerals,  and  mineral  substances  of  industrial  importance  in 
Kentucky MR  1882,  pp  684-686 
Profiles  of  rivers  in  United  States WS  44 
Propylite,  a  decomposition  product  of  various  rocks Ann  2,  p  297; 
Mon  in,  pp  81-90,  135-144,  375;  Bull  17,  p  30 
analyses  of,  from  Nevada,  Washoe  district Mon  in,  opp  p  152 
Prosopite,  analysis  of,  from  Colorado,  Pikes  Peak  region Ann  20, 
vi  emit,  p  591;   Bull  20,  p  64;  Bull  167,  p  68 
analysis  of,  from  Saxony,  Altenberg Ann  20, 
vi  cont,  p  591;   Bull  20,  p  63;'  Bull  L67,  p  68 
from  Utah,  Tooele Ann  20,  vi  cont,  p  591;   Bull  L67,  p  68 
from  Colorado,  near  Pikes  Peak,  occurrence,  chemical  investigation,  etc., 
of Bull  20.  pp  62-66 
from  Utah,  Dugway  mining  district,  mineralogic  uotes  on Bull  167,  pp  66-68 
occurrence  of \nn  20,  vi  cont,  p  591 
Prospect  Mountain  limestone  of  Nevada,  fossils  of... Bull  30,  pp  32-33 
of  Nevada  and  Utah Ann  3,  pp  253,  254-255;  Ann  4,  pp  229,  230-231;  Mon 
vn,pp6-7;  Mon  kx,  pp  36-38;   Bull  81,  pp  252,314-315 
Prospect  Mountain  quartzite  of  Nevada  and  Utah \nn  :;.  |>  254; 
Ann  4, pp  230,233;  Mon  w.  p  35;  Bull  81,  pp  252,  313  314 
Prospecting,  methods  of,  in  Nevada,  Eureka  district Mon  vn,  pp  L39-149 
Prospecting  rules  for  Penokee  district Mon  six,  pp  270-279 
Prosser  (C.  S. ),  clay  deposits  of  Kansas .MR  1892,  pp  731  -733 
Devonian  system  of  eastern  Pennsylvania  and  New   York Bull  120 
Proteacea^  of  Amboy  clays Mon  sxvi,  pp  71-72 
of  Dakota  group Mon  \  \n.  pp  89-90 
Proterozoic,  adoption  of  term .' Bull  86,  }  >  493 
Protoceras  bed  of  South  Dakota,  correlation  of \nn  18,  ii,  p  341 
Protophasmida  from  Rhode  Island  coal  field Bull  101 ,  pp  20-21 
Protovermienlite,  analysis  of,  from  Arkansas,  Magnet  ( )i  ive Bull  90,  pp  1 1,  12 
chemical  constitution  of Bull  125,  p  50 
Protozoa  from  Cretaceous  of  New  Jersey Bull  88 
from  Yellowstone  Park Mon  xxxn,  n,  p  51  >7 
Protremata,  biologic  development  of Bull  87,  pp  81-85 
Provo  River,  flow  of,  measurements  of Ann  11,  ir,  pp 
104,  109;  Ann  12,  n.  pp  340,  354,  361 ;  Ann  13,  in,  pp  97,  99; 
Ann  14,  n,  pp  123-124;  Ann  18,  iv,  pp  325,  327,  328;  Ann  19, 
iv,  pp  441-442;  Ann  20,  iv,  pp  61,  468;  Ann  21,  iv,  pp  398- 
399;  Bull  131,  pp  59-60;  Bull  140,  pp  234-235;  WS  11,  p  79; 
WS  16,  p  162;  WS  28,  pp  152,  153,  154;  WS  38,  pp  338-339 
Prozoic  rocks,  use  of  term Bull  86,  p  323 
Pryor  Mountains,  Wyoming,  structure  of Bull  119,  pp  45-46 
Pseudobrookite,  chemical  constitution  of Bull  125,  p  67 
Pseudodiabase  of  California,  Coast  Ranges Mon  xm,  pp  94-99,  101-102 
Pseudodiorite  of  California,  Coast  Ranges Mon  xm,  pp  99-101 
Pseudomorphism  after  limestone,  evidences  of,  in  ores Mon  vn,  p  98 
Pseudomorphs  of  calcite  and  dolomite  in  Massachusetts,  western Mon  xxix, 
pp  389-391 
Psilomelane,  analysis  of,  from  Colorado,  Round  Mountain,  on  rhyolite Ann  17, 
ii,  p  451 
analysis  of,  from  East  Indies,  Gosalpur Ann  17,  in,  p  221 
Pteranodon  from  Denver  Basin,  remains  of Mon  xxvn,  p  509 
Pteranodon  beds  in  Denver  Basin Mon  xxvn,  pp  476-477 
Pteridophyta  from  Lower  Coal  Measures  of  Missouri Mon  xxxvn,  pp  16-256 
Pteriidae  from  marl  beds  of  New  Jersey Mon  ix,  pp  68-81,  198 
